A file system that can eat your data is broken. If a feature is not ready for public consumption, it should not be built-in in the first place.
Here's a list of failures from zfs, including many kernel panics for example https://github.com/openzfs/zfs/labels/Type%3A%20Defect - is it broken and shouldn't have been released?
Maybe to put it differently: new file systems should offer improvements wrt reliability for stable features of the file systems of the previous generation; regressions are unacceptable.